///The Ga’erqiong Cu-Au deposit in Ge’gyai County of Ngari area in Tibet is the first large-size Cu-Au deposit based on detailed survey. Based on the geological characteristics of the ore deposit in combination with the data available, this paper discusses the geological characteristics of the ore deposit, and holds the view that the Ga’erqiong Cu-Au deposit was formed after the closure of the Bannu Ocean in late Cretaceous period, and by the collision of arc-continent between the southern Qiangtang-Sanjiang complex slab and the Gangdise-Nyanqentanglha slab, showing the tripartite metallogenic characteristics genetically closely related to potassic basalt-high potassic calc-alkaline diorite-lithosome and continent-continent co-collision potassic basalt-high potassic calc-alkaline remelted granite-porphyry. That is to say, the host ore body existed in porphyry, skarn, and structural fracture zone, thus forming the "porphyry-skarn-IOCG-like" Cu-Au deposit.
